What on Earth?
The Cave to Hell
Season 6 Episode 5 of 20
The images of a cave in Iceland that could hold alien secrets. Plus, military structures in the Utah desert and a bloody stain in the sands of Saudi Arabia
What on Earth? airs on Sky History 2 at 8:00 AM, Tuesday 17 March. (Subtitles.)
Topics
News ➝ Current Affairs
Documentary